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Talk:Roberts cross

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It's a good idea to provide computational steps or a link on how to compute these basic operators since the article assumes that the reader knows how to apply a kernel.

Is this right?

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I'm not incredibly familiar with the Roberts Cross Operator but reading through the article,

Shouldn't

be

??? —Preceding unsigned comment added by 198.151.13.10 (talk) 18:13, 13 August 2010 (UTC)[reply]

OK, now who's gonna fix it? --Volyrkr (talk) 17:26, 19 August 2010 (UTC)[reply]

One more thing that I noticed: why the first square root is applied?

Shouldn't it just be:

I just read the original paper of Lawrence Roberts and there's no mention whatsoever for a first square root step. It is just kernel convolution and then gradient calculation using the formula above.

If anyone has any idea on the matter, please let me know. — Preceding unsigned comment added by 2A02:587:A569:2100:5DD3:580A:58A8:2040 (talk) 16:01, 26 October 2020 (UTC)[reply]

Costella operator

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I removed references to the Costella operator per discussion at Talk:Sobel_operator#Costella_Kernel. — Control.valve (talk) 18:34, 12 September 2011 (UTC)[reply]